CA1079351A - Electrolyte compositions for alkali metal reversible batteries - Google Patents
Electrolyte compositions for alkali metal reversible batteriesInfo
- Publication number
- CA1079351A CA1079351A CA287,605A CA287605A CA1079351A CA 1079351 A CA1079351 A CA 1079351A CA 287605 A CA287605 A CA 287605A CA 1079351 A CA1079351 A CA 1079351A
- Authority
- CA
- Canada
- Prior art keywords
- organic
- radicals
- group
- alkali metal
- carbon atoms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003792 electrolyte Substances 0.000 title claims abstract description 33
- 229910052783 alkali metal Inorganic materials 0.000 title claims abstract description 26
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 150000001340 alkali metals Chemical class 0.000 title claims abstract description 14
- 230000002441 reversible effect Effects 0.000 title abstract 2
- -1 alkali metal salts Chemical class 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 17
- 239000003960 organic solvent Substances 0.000 claims abstract description 13
- 229910052796 boron Inorganic materials 0.000 claims abstract description 12
- 150000002170 ethers Chemical class 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 229940082615 organic nitrates used in cardiac disease Drugs 0.000 claims abstract description 6
- 150000003457 sulfones Chemical class 0.000 claims abstract description 6
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 5
- 150000004028 organic sulfates Chemical class 0.000 claims abstract description 5
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 4
- 229910052738 indium Inorganic materials 0.000 claims abstract description 4
- 229910052718 tin Inorganic materials 0.000 claims abstract description 4
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims abstract 4
- 239000011149 active material Substances 0.000 claims abstract 3
- 150000002826 nitrites Chemical class 0.000 claims abstract 3
- 229910052716 thallium Inorganic materials 0.000 claims abstract 3
- 229910052725 zinc Inorganic materials 0.000 claims abstract 3
- 150000003254 radicals Chemical class 0.000 claims description 32
- 239000002904 solvent Substances 0.000 claims description 19
- 125000004432 carbon atom Chemical group C* 0.000 claims description 16
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 6
- 125000002877 alkyl aryl group Chemical group 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 229910003002 lithium salt Inorganic materials 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 125000004429 atom Chemical group 0.000 claims description 2
- CFJRPNFOLVDFMJ-UHFFFAOYSA-N titanium disulfide Chemical compound S=[Ti]=S CFJRPNFOLVDFMJ-UHFFFAOYSA-N 0.000 claims description 2
- 150000003624 transition metals Chemical class 0.000 claims description 2
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical compound [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 claims 3
- 150000005840 aryl radicals Chemical class 0.000 claims 3
- 239000006182 cathode active material Substances 0.000 claims 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 2
- 229910052700 potassium Inorganic materials 0.000 claims 2
- 239000011591 potassium Substances 0.000 claims 2
- 239000006183 anode active material Substances 0.000 claims 1
- 125000001033 ether group Chemical group 0.000 claims 1
- 239000011255 nonaqueous electrolyte Substances 0.000 claims 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 description 28
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 21
- 150000002500 ions Chemical class 0.000 description 20
- 239000000243 solution Substances 0.000 description 15
- 229960001078 lithium Drugs 0.000 description 9
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 8
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 8
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- CMXPERZAMAQXSF-UHFFFAOYSA-M sodium;1,4-bis(2-ethylhexoxy)-1,4-dioxobutane-2-sulfonate;1,8-dihydroxyanthracene-9,10-dione Chemical compound [Na+].O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=CC=C2O.CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC CMXPERZAMAQXSF-UHFFFAOYSA-M 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 241000894007 species Species 0.000 description 5
- BHMLFPOTZYRDKA-IRXDYDNUSA-N (2s)-2-[(s)-(2-iodophenoxy)-phenylmethyl]morpholine Chemical compound IC1=CC=CC=C1O[C@@H](C=1C=CC=CC=1)[C@H]1OCCNC1 BHMLFPOTZYRDKA-IRXDYDNUSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229940037003 alum Drugs 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000536 complexating effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- MCWXGJITAZMZEV-UHFFFAOYSA-N dimethoate Chemical compound CNC(=O)CSP(=S)(OC)OC MCWXGJITAZMZEV-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000518994 Conta Species 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910003092 TiS2 Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- ABADUMLIAZCWJD-UHFFFAOYSA-N 1,3-dioxole Chemical compound C1OC=CO1 ABADUMLIAZCWJD-UHFFFAOYSA-N 0.000 description 1
- WHUXWWJFRBXUOQ-UHFFFAOYSA-N 2-(3-ethylsulfanyl-4,5-dimethoxyphenyl)ethanamine Chemical compound CCSC1=CC(CCN)=CC(OC)=C1OC WHUXWWJFRBXUOQ-UHFFFAOYSA-N 0.000 description 1
- HFGHRUCCKVYFKL-UHFFFAOYSA-N 4-ethoxy-2-piperazin-1-yl-7-pyridin-4-yl-5h-pyrimido[5,4-b]indole Chemical compound C1=C2NC=3C(OCC)=NC(N4CCNCC4)=NC=3C2=CC=C1C1=CC=NC=C1 HFGHRUCCKVYFKL-UHFFFAOYSA-N 0.000 description 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical class CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920013683 Celanese Polymers 0.000 description 1
- 102000016736 Cyclin Human genes 0.000 description 1
- 108050006400 Cyclin Proteins 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 241001397173 Kali <angiosperm> Species 0.000 description 1
- XUIIKFGFIJCVMT-LBPRGKRZSA-N L-thyroxine Chemical compound IC1=CC(C[C@H]([NH3+])C([O-])=O)=CC(I)=C1OC1=CC(I)=C(O)C(I)=C1 XUIIKFGFIJCVMT-LBPRGKRZSA-N 0.000 description 1
- 229910010199 LiAl Inorganic materials 0.000 description 1
- 101100059652 Mus musculus Cetn1 gene Proteins 0.000 description 1
- 101100059655 Mus musculus Cetn2 gene Proteins 0.000 description 1
- WOZQBERUBLYCEG-UHFFFAOYSA-N SWEP Chemical compound COC(=O)NC1=CC=C(Cl)C(Cl)=C1 WOZQBERUBLYCEG-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- HTIQEAQVCYTUBX-UHFFFAOYSA-N amlodipine Chemical compound CCOC(=O)C1=C(COCCN)NC(C)=C(C(=O)OC)C1C1=CC=CC=C1Cl HTIQEAQVCYTUBX-UHFFFAOYSA-N 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- VCXGBWXYAVHFAE-UHFFFAOYSA-N benzene;1,3-dioxolane Chemical compound C1COCO1.C1=CC=CC=C1 VCXGBWXYAVHFAE-UHFFFAOYSA-N 0.000 description 1
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 229910052798 chalcogen Inorganic materials 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 150000001787 chalcogens Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- JCYWCSGERIELPG-UHFFFAOYSA-N imes Chemical class CC1=CC(C)=CC(C)=C1N1C=CN(C=2C(=CC(C)=CC=2C)C)[C]1 JCYWCSGERIELPG-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 230000002101 lytic effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- APVPOHHVBBYQAV-UHFFFAOYSA-N n-(4-aminophenyl)sulfonyloctadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NS(=O)(=O)C1=CC=C(N)C=C1 APVPOHHVBBYQAV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229940037201 oris Drugs 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 238000013207 serial dilution Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- LALRXNPLTWZJIJ-UHFFFAOYSA-N triethylborane Chemical compound CCB(CC)CC LALRXNPLTWZJIJ-UHFFFAOYSA-N 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
- C07F5/027—Organoboranes and organoborohydrides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
- H01M6/16—Cells with non-aqueous electrolyte with organic electrolyte
- H01M6/162—Cells with non-aqueous electrolyte with organic electrolyte characterised by the electrolyte
- H01M6/166—Cells with non-aqueous electrolyte with organic electrolyte characterised by the electrolyte by the solute
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Electrolyte compositions for reversible alkali metal cells, e.g., lithium batteries, are described which consist essential-ly of (a) organic solvents selected from the group consisting of inertly substituted and unsubstituted ethers, esters, sulfones, organic sulfites, organic sulfates, organic nitrites and organic nitrates; and (b) electrolytically active alkali metal salts including organometallic alkali metal salts having the formula ZMRn wherein Z is an alkali metal, M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, In, Tl, Sn (stannous), P and As, the Rs are certain organic radicals, and n is a numerical value equal to one plus the valence of the metal M. Rechargeable, high energy density electrochemical cells containing an anode having an alkali metal as its active material, a cathode, e.g., one having as its active material a transition metal chalcogenide, and an electrolyte composition of the above described type, are also described.
Electrolyte compositions for reversible alkali metal cells, e.g., lithium batteries, are described which consist essential-ly of (a) organic solvents selected from the group consisting of inertly substituted and unsubstituted ethers, esters, sulfones, organic sulfites, organic sulfates, organic nitrites and organic nitrates; and (b) electrolytically active alkali metal salts including organometallic alkali metal salts having the formula ZMRn wherein Z is an alkali metal, M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, In, Tl, Sn (stannous), P and As, the Rs are certain organic radicals, and n is a numerical value equal to one plus the valence of the metal M. Rechargeable, high energy density electrochemical cells containing an anode having an alkali metal as its active material, a cathode, e.g., one having as its active material a transition metal chalcogenide, and an electrolyte composition of the above described type, are also described.
Description
3~
B~(~GR.OU~NlD~ F, I~V~I~ LON
B~(~GR.OU~NlD~ F, I~V~I~ LON
2 (~ Fl~ , tl1~e~; L~n
3 ~ ~he presen~ lnverL~.ioll relates to novel electroly~e compos:it:~ons for hi~h energy den~ity electrochemical cells and to cells incl.uding these el.ectrolyte compositionsO Mo~e 6 speci:Eically~ the p~esent inv~rLtior~ is directed to elec~ro--,~ ly~e co~posi~ons coYIsis~ing essenti~lly of sclvent and 8 elec~ lytica~ ly act~ve al~li met.al salts includlng Ln 9 organor~e~all~c: allcal-L me~Ll salt. It is also dixec~ed to rechargeable9 lligh energy dens:i.ty elec~xochem:Lcal ~ells 11 having alkall metal anode~ alld containing tl~ese electroly~e 12 composi~lo~s.
13 (2) ~r~or Art 1~ A recently deve~oped rechargeable~ h:Lgh energy density el~c~rochemical cell consLsts o~ an alkali metal 6 m~terial as the anode~ac~ive m~erial~ a ~ransition me~al 7 chalcogenide as the cathode~active ma~erial9 and a nonaqueous 18 electrol~te. More speclically, preferred cells conslst o 9 lithium anodes9 ~itanium d~sulf~de cathodes and nonaqueous ~ electrol~te composi~ions conslst-Lng of v~riou~ lithium sal~s9 21 such a~ L~Cl04~ dissolved in organic solven~s9 such as pro 22 pylene carbonate~ ~e~rahydro~uxan~ dioxolane~ and ~iæ~ures 23 o~ dimethy~xyethane ~nd te~rahydrofur~n~ and conta~ning 24 various s~abilizing addit~vesO
: 2s Important features of thBse cells inc~ude theix 26 ability ~o be xepea~edly discharged and chargedO ~heoreti-27 ~allyD cycl;.ng by discharging ~nd charging should be posslble 28 inde~initely9 but in practice inde~inite eycling is not ~9 xeali~ed~ Dersdri~lc growth on ~e anode durlng charging and :
30 degradatiQn o the ca~hode ma~erial ~re some~imes ~imit~g 31 ~ac~ors in ~he amoun~ o c~clirlg ~o which a cell can be 32 ~ubjected. Howe~ver9 the eïeckrolyte, parklcu:Larl~r nonaqlleous ~ 2 ~
. .. , ~ , .. .. .. . .. .
3~j~
1 electrolytesJ can at times be the limltlng f~c~or~ The effects 2 o~ ~parklcular electrol~te compositlon on the electrochemic~l 3 pe~formanceofacellmay be.si.gnl.ficant duetoi~s rela~ivestabil.
13 (2) ~r~or Art 1~ A recently deve~oped rechargeable~ h:Lgh energy density el~c~rochemical cell consLsts o~ an alkali metal 6 m~terial as the anode~ac~ive m~erial~ a ~ransition me~al 7 chalcogenide as the cathode~active ma~erial9 and a nonaqueous 18 electrol~te. More speclically, preferred cells conslst o 9 lithium anodes9 ~itanium d~sulf~de cathodes and nonaqueous ~ electrol~te composi~ions conslst-Lng of v~riou~ lithium sal~s9 21 such a~ L~Cl04~ dissolved in organic solven~s9 such as pro 22 pylene carbonate~ ~e~rahydro~uxan~ dioxolane~ and ~iæ~ures 23 o~ dimethy~xyethane ~nd te~rahydrofur~n~ and conta~ning 24 various s~abilizing addit~vesO
: 2s Important features of thBse cells inc~ude theix 26 ability ~o be xepea~edly discharged and chargedO ~heoreti-27 ~allyD cycl;.ng by discharging ~nd charging should be posslble 28 inde~initely9 but in practice inde~inite eycling is not ~9 xeali~ed~ Dersdri~lc growth on ~e anode durlng charging and :
30 degradatiQn o the ca~hode ma~erial ~re some~imes ~imit~g 31 ~ac~ors in ~he amoun~ o c~clirlg ~o which a cell can be 32 ~ubjected. Howe~ver9 the eïeckrolyte, parklcu:Larl~r nonaqlleous ~ 2 ~
. .. , ~ , .. .. .. . .. .
3~j~
1 electrolytesJ can at times be the limltlng f~c~or~ The effects 2 o~ ~parklcular electrol~te compositlon on the electrochemic~l 3 pe~formanceofacellmay be.si.gnl.ficant duetoi~s rela~ivestabil.
4 ~ y or it maybe due to other ~actors. One particular electro-lyte composi~ion mightbehigllly e~fectivewi~h a given anode-6 ca~hode couplebutbe ineffective or another couple~ eitherbe-7 cause it is not inert ~othe secon.d couple orbecause it reacts 8 with itself under theconditions present during cyclin~. Fur~
9 thermore~ even when a particular electrolyte composi~lon is 0 e~fec~ive in a given cell~ itmay nonethelessbeundesirable for other reasons~ For example7 ~hesometimes pre~erred LiClO~
12 based electrolyte creates a potential explosion hazard~ And, 13 ~or example, various organometallic alkali metal s~l~ compounds 14 such as aredescribed inU~S. Pa~ent ~os. 3,734,963 and 3~764S3~5 have the disadvan~age ofrequiring complexing withvarious ni~
6 trogen, phosphorus orsulur-containing organic compounds con-taining a~ leasttwo unctionalitles. Recen~ studies havebeen 8 made directedtoLiB(c6H5)4 electrolyte systemsbySzwarc et al, 19 . Ph~ Chem~ Vol. 69~ p 608 et sRq~ (1965) but these sys-tems have been found to have low solubility and high resis-21 tlvityO For these reasons, novel but effective li~hium sal~ :
22 containing electrolyte compositions for alkali metal anode 23 type cells are desirable~
24 S~M~AR~ OF ~IE INV~NTION
- :' The present invention is d~rected ~o improved 26 electrolyte compositions and to electro hemical cells con~
27 taining these electrolyte compositlons, 28 The electrolyte composititons consist essentially of 29 organic solvent and electrolytically active ~lkalii metal salts 30 including an organometallic alkali metal salt o~ the :Eor~la: -3~
32 wherein ~ is ~n alkalit metal; M is a metal selected rom ~he 33 group consistitng of Zn~ Cd, Bv Al9 Ga, In~ Tl~ Sn (s~flnnous) :
34 P and As3, R represents organic radicals7 as se~ :Eor~h below~
. ' ' , : .
~9 3 1 ~nd n is the n~m~er of organic r~dicals, :i~e~ 7 n is 2 r.~merical value equal to one plus the ~aLence of the metal M~
3 ~he alkali me~al represented by Z in Formula (1) 4 above is any alkali metal3 but is desirably selected from li~hium~ sodi~m and potassium3 with lithium being the pre~
6 ferre~ e~odlmen~
7 The metal M in Fon~u:la (1) is any of zinc9 cadmium~
8 boron9 aluminum~ gallium~ indi~n9 thalli~m~ ~in ~s~annous);
y phosphorus and arsenic~ De~ir~)ly~ M is selected from the group con~istin~ of boron9 aluminum~ pllosphorus and arsenic.
11 Most pre~erred is boron.q 12 ~le org~nic radicals represented by each R may be 13 the same or dif~erent and are inertl~ su~st~tuted or unsub~
stituted organic radicals~ with ~he provi.so that at leas~
one R is an allcyl radlcal~ By "iner~ly subs~i~u~edr' is 16 meant radicals containing substituents w~ich ha~e no detri-mental e~ect on the electrolytic prope~t~es o~ the electro~
18 ly~e composition in the conte~t o~ its e~ectiveness in 9 electrochemlcal cellsO These organic radicals R may be9 therefore9 iner~ly subs~i~uted or unsubs~ituted allcyl .. ..
21 radicals~ aryl r~dical~ alkæ yl ~adicals or aral~yl radicals, : ~ 22 subject tQ th~ above proviso. For ex~mpleS they may be ~; ~ 23 selected rom the gro~lp consisting o alkyl radicals having 24 ~ to 8 carbon atoms, axyl radicals having 6 to 18 carbon : .
2~ atoms9 and alkaryl ~nd aralkyl radicals havlng 7 to 5~ car~
26 bon atoms. Desirable org~nic radicals are ~he alkyl radicals ~ 27 having 1 to 6 carbon at3m~9 and the phenyl r~dical. Pre~ :
::: 28 ferred are th~, organic radicals whic~ are alkyl radicals . having 1 to ~ carbon atoms~ Particularly useful are the salts.where~n all o the organic radicals are methyl ~ ~ 31 radicals~ :
: :~33~ Th~a variable n ~n Formula (1) repre~ents the : ~ 4 ~
'; ~ ' ' . .
.
~7 ~ 3~ ~
~ mber o~ organ:Lc racli.cals R and is~ ~herefore~ a numerlcal 2 value equ~l r~O Olle plus ~he ~alence of fhe metal M~ ~hus9 3 n=~ when M ls Zn~ Cd9 and Sn~ n~4 w~en M ls B, Al~ Ga, Ing 4 and Tl9 and n=6 w~en M is P andl A~o T~le organometallie a~llcal.i me~al salts employed in 6 the presen~ invention are prepared by reacting mono-organo-7 alkal~ me~al com~3unds wi~h pol~organo~metal.lic compounds ~n 8 an organlc solvent~ ~he reac~i.on is believed to ~e repre-g sented by the ~ollowing equation:
0 Z~ ~ M~n~l ~ Z~M~n~
wherein the ~ariables are as d~fined for Formula (1) above~
2 The reaction may ~e carried out a~ any operable pressure and temperature9 and room temper~ure and pressure condi~ions 4 will allow ~he reac~on to read~ly occur in ~ost lnstances~
A~ mentloned~ the electrolyte composlkion of the 6 present invention consists essentially o~ organic solvent 7 and el~ctrolyticall~ ~c~ve allcali m~al salts includ~g an 18 organometall~c al~ali metal salt o FormNla (1) a~ove. T~u.s, 19 a mixtu~e of ~alts is conte~lated, at least one of which is :20 a E~nmula ~ ype salt~ Th~ o~h~ ~al~ or s~l~s ~n the 21 mixt~re m~y be any elect~olytically active alkali me~al salt 22 ~hich is compatible wi~h ~he Forn~lla (l) type sal~ e~g~a 23 LiBr9 L~I and the l~ke-D Also contemplated is t~Q electrolyte 24 which c~ntains only one or more salts of Formula (l)~ ~hus~ ;
2s t~e expression "eleetrolyt~cally act~.ve alkal~. metal salts 26 includIng an org~omet~llic alkali metal saltl1 should be 27 construed to ~nclud2. (1~ m~ res of organometall~e al~ali :
28 metal salt(s) and other com~at~ble alkali m~al salt(s~ and (2~ one or re organometalLlc salts wi~hou~ other sal~s~
.
~ ~ Preferred is ~he elee~rolyte eonta~n~ng ~he organometall~c : :
.
31 sal~(s) without o~her sal~s :32 ~ The organic so~ent employed in ~he electrol~te ~ S
~ ~ ' '~'' ' ' ' 'I'1-.'. ' ' ~' I ' ' ' ' . '' ' '
9 thermore~ even when a particular electrolyte composi~lon is 0 e~fec~ive in a given cell~ itmay nonethelessbeundesirable for other reasons~ For example7 ~hesometimes pre~erred LiClO~
12 based electrolyte creates a potential explosion hazard~ And, 13 ~or example, various organometallic alkali metal s~l~ compounds 14 such as aredescribed inU~S. Pa~ent ~os. 3,734,963 and 3~764S3~5 have the disadvan~age ofrequiring complexing withvarious ni~
6 trogen, phosphorus orsulur-containing organic compounds con-taining a~ leasttwo unctionalitles. Recen~ studies havebeen 8 made directedtoLiB(c6H5)4 electrolyte systemsbySzwarc et al, 19 . Ph~ Chem~ Vol. 69~ p 608 et sRq~ (1965) but these sys-tems have been found to have low solubility and high resis-21 tlvityO For these reasons, novel but effective li~hium sal~ :
22 containing electrolyte compositions for alkali metal anode 23 type cells are desirable~
24 S~M~AR~ OF ~IE INV~NTION
- :' The present invention is d~rected ~o improved 26 electrolyte compositions and to electro hemical cells con~
27 taining these electrolyte compositlons, 28 The electrolyte composititons consist essentially of 29 organic solvent and electrolytically active ~lkalii metal salts 30 including an organometallic alkali metal salt o~ the :Eor~la: -3~
32 wherein ~ is ~n alkalit metal; M is a metal selected rom ~he 33 group consistitng of Zn~ Cd, Bv Al9 Ga, In~ Tl~ Sn (s~flnnous) :
34 P and As3, R represents organic radicals7 as se~ :Eor~h below~
. ' ' , : .
~9 3 1 ~nd n is the n~m~er of organic r~dicals, :i~e~ 7 n is 2 r.~merical value equal to one plus the ~aLence of the metal M~
3 ~he alkali me~al represented by Z in Formula (1) 4 above is any alkali metal3 but is desirably selected from li~hium~ sodi~m and potassium3 with lithium being the pre~
6 ferre~ e~odlmen~
7 The metal M in Fon~u:la (1) is any of zinc9 cadmium~
8 boron9 aluminum~ gallium~ indi~n9 thalli~m~ ~in ~s~annous);
y phosphorus and arsenic~ De~ir~)ly~ M is selected from the group con~istin~ of boron9 aluminum~ pllosphorus and arsenic.
11 Most pre~erred is boron.q 12 ~le org~nic radicals represented by each R may be 13 the same or dif~erent and are inertl~ su~st~tuted or unsub~
stituted organic radicals~ with ~he provi.so that at leas~
one R is an allcyl radlcal~ By "iner~ly subs~i~u~edr' is 16 meant radicals containing substituents w~ich ha~e no detri-mental e~ect on the electrolytic prope~t~es o~ the electro~
18 ly~e composition in the conte~t o~ its e~ectiveness in 9 electrochemlcal cellsO These organic radicals R may be9 therefore9 iner~ly subs~i~uted or unsubs~ituted allcyl .. ..
21 radicals~ aryl r~dical~ alkæ yl ~adicals or aral~yl radicals, : ~ 22 subject tQ th~ above proviso. For ex~mpleS they may be ~; ~ 23 selected rom the gro~lp consisting o alkyl radicals having 24 ~ to 8 carbon atoms, axyl radicals having 6 to 18 carbon : .
2~ atoms9 and alkaryl ~nd aralkyl radicals havlng 7 to 5~ car~
26 bon atoms. Desirable org~nic radicals are ~he alkyl radicals ~ 27 having 1 to 6 carbon at3m~9 and the phenyl r~dical. Pre~ :
::: 28 ferred are th~, organic radicals whic~ are alkyl radicals . having 1 to ~ carbon atoms~ Particularly useful are the salts.where~n all o the organic radicals are methyl ~ ~ 31 radicals~ :
: :~33~ Th~a variable n ~n Formula (1) repre~ents the : ~ 4 ~
'; ~ ' ' . .
.
~7 ~ 3~ ~
~ mber o~ organ:Lc racli.cals R and is~ ~herefore~ a numerlcal 2 value equ~l r~O Olle plus ~he ~alence of fhe metal M~ ~hus9 3 n=~ when M ls Zn~ Cd9 and Sn~ n~4 w~en M ls B, Al~ Ga, Ing 4 and Tl9 and n=6 w~en M is P andl A~o T~le organometallie a~llcal.i me~al salts employed in 6 the presen~ invention are prepared by reacting mono-organo-7 alkal~ me~al com~3unds wi~h pol~organo~metal.lic compounds ~n 8 an organlc solvent~ ~he reac~i.on is believed to ~e repre-g sented by the ~ollowing equation:
0 Z~ ~ M~n~l ~ Z~M~n~
wherein the ~ariables are as d~fined for Formula (1) above~
2 The reaction may ~e carried out a~ any operable pressure and temperature9 and room temper~ure and pressure condi~ions 4 will allow ~he reac~on to read~ly occur in ~ost lnstances~
A~ mentloned~ the electrolyte composlkion of the 6 present invention consists essentially o~ organic solvent 7 and el~ctrolyticall~ ~c~ve allcali m~al salts includ~g an 18 organometall~c al~ali metal salt o FormNla (1) a~ove. T~u.s, 19 a mixtu~e of ~alts is conte~lated, at least one of which is :20 a E~nmula ~ ype salt~ Th~ o~h~ ~al~ or s~l~s ~n the 21 mixt~re m~y be any elect~olytically active alkali me~al salt 22 ~hich is compatible wi~h ~he Forn~lla (l) type sal~ e~g~a 23 LiBr9 L~I and the l~ke-D Also contemplated is t~Q electrolyte 24 which c~ntains only one or more salts of Formula (l)~ ~hus~ ;
2s t~e expression "eleetrolyt~cally act~.ve alkal~. metal salts 26 includIng an org~omet~llic alkali metal saltl1 should be 27 construed to ~nclud2. (1~ m~ res of organometall~e al~ali :
28 metal salt(s) and other com~at~ble alkali m~al salt(s~ and (2~ one or re organometalLlc salts wi~hou~ other sal~s~
.
~ ~ Preferred is ~he elee~rolyte eonta~n~ng ~he organometall~c : :
.
31 sal~(s) without o~her sal~s :32 ~ The organic so~ent employed in ~he electrol~te ~ S
~ ~ ' '~'' ' ' ' 'I'1-.'. ' ' ~' I ' ' ' ' . '' ' '
5 ~
1 c~m~osition of ~he presenk lnvention is generally one 2 .~ected from the group consist:ing of :i.nertly substi~uted 3 a~d unsubsti~cu~ed ethers, esters9 sulfones, organic sul~ites, 4 c~rganic sul~es~ organic nitrltes and ~rganic nit~a~esO
By "iner~ly subs~ituted" solvent ls meant one wh~ch con~ains
1 c~m~osition of ~he presenk lnvention is generally one 2 .~ected from the group consist:ing of :i.nertly substi~uted 3 a~d unsubsti~cu~ed ethers, esters9 sulfones, organic sul~ites, 4 c~rganic sul~es~ organic nitrltes and ~rganic nit~a~esO
By "iner~ly subs~ituted" solvent ls meant one wh~ch con~ains
6 substituent$ w~ich have no detrimen~al ef~e-~t on the electro-
7 lytic properties of the elec~rolyte composition in the con~
8 tex~ of it~ effec~iveness in electrochemical cells. These
9 solven~s may be any o~ the foregoing which wiLl unction ~5 lo either a d~luent or as a complexing soLvent wi~h the organo~
.
11 metallic a~kali metal sal~ and wh~ch will~ wit~ the saLt~
12 produce an effective electrolyteO Thus, the solvents which 13 are included ~e ~hose composed o~ one or more compou~ds 14 selec~ed from straigh~ chain e~hers, polyethers~ and cyclical e~hers, including such ethers as ~he ace~als~ ketals and 16 ortho~es~ers, and organlc es~ers, sulfones~ organic nitrates 7 ~nd nitri~es and organic sulfates and sulites O Examples 18 include propylene carbona~eg tetrahydrourarl9 dio~olane9 19 furan, sulolaneg dime~hyl sul~ite~ n~trobenzene~ nitro-:, ~ methane and ~he like~ The preferred solven~s are the ethers.
21 For exampl~ dioxolan~9 dime~hyoxyeth~ne~ and ~xtures of 22 these are useul~ Pre~erred ~s a solvent contain~ng dioxo~
23 laneO
24 In general~ sufficien~ organic solvent mNs~ be 25 utilized ~o e~fec~?ely render the organome~allic a1kali 26 me~al sal~ eLec~ro~y~cally active (l~e~J adequately con~
27 ductive) when employ~d in an elec~rolytle cell. ~he solvent -23 may be a mixt1ure of compounds as suggested above, and may contain hnown eleetroly~e additives whioh are compa~ble with the solvent and the particular salt employed~ As ~o 31 the amount of salt to be employed ln the organio solvent, - 32 this will vary ~remendously with ~he speelfic solven~ used, :~ :
.. .. - . .
-~ .
3S~
1 the sal~ chosen ancl t.he. type of electr~ehemLcal cell per-2 ~ormance wh-lch is desired~ In any even~ an elec~olytically 3 active amount o~ sal~ must be added ~o the sol~ent. Typl;~
4 cally9 a~ least about Ool m~leC; O~ sal~ up to sa~uration may be used per liter of solven~ e.g.~ about Ool to abou~ 5 6 moles/liter may be used and preferably about O.S to about 3 7 moles/li~er may be used~
8 The pxesen~ invention9 as mentloned~ also ~ela~es 9 to ~mproved9 reehar.geable~ high energ~ densit~ ele~trochemlcrll c~lls~ ~he cell~ i.ncl~de an~ containing alkali metal anodes 11 and elec~rol~kes as defined above. Partlcularly useful are 2 those containing solld cathode-act~ve materials, eOgOD
cathodes having ~r~n~ition metal chalcogenidesO Also pre~
ferred are the seconda~y cellsO Alkal~ metals used in the anodes are desirably li~hiumg sodium and potassiumg and the 16 transition metal chalcogenide ca~hode~active mater-lals include ~hose con~in~ng at least ~ne member selected from 8 the group consi~ting of molybden~m~ titanium, ~irconium~
19 hafnium~ ni~ium9 ~antal~m and vanad~um, and at least one 20 chalcogen selected from ox~gen9 sulfur9 selenium~ and tellu~ :
21 i~o The anode i~ ad~antageousl~ ~de o:E lithium or lithium 22 alloys be~ause lith~um has the l~west equi~7alent weight of 23 the alkali metal~ and is the most elac~-fonega~ive9 thereby 24 pro~iding the most energy per welght unit~ Of ~e lamellar transition metal chalcogenid~sg preferred are the dichalco~
26 genides~ and the most pre~erred is titanium disulfide because :~
.. .. .
~:: 27 i~ has a low equlv~lent weig~t9 is electrically conductive ~: ~ 28 and its constituents are readily avaLlableO ~he electrolyte 29 composition consis~s esse~tially of so~ren~ and alkali rnetal calt(s) which is set ~or~h above.
: 31 Th.e oll~wLng exa~ples are presented as mere~y 32 being illus~rative o~ the presen~ inventlonD and the 7 ~
1 lnvcnt-i~n should no~ be cons~rued to be l:imited thereko~
2 Exampl~.s 1~ and 2 are direc~ed to priox art electrolytes ~nd 3 Examples 3 to 9 e~emplify the present lnvention (Eæample 8 4 illust.1r~tes ~n el.e~troly~e o the present invention which con~ains a m;x~ure of salks~ Examples 10 to 21 are directed 6 to c~parisons of prior art type ~lec~roly~e systems and 7 thos~ of the presen~ inven~i~n~
___ 9 LiB(C6~s)~ (lith-ium tetr~phenylboride) was prepared in accordan~e with the tea~hin~s of Szwarc et al9 cited ~bOve7 11 by rea~ting NaB(C6Hs~4 wi~h LiClo A dr~9 solvent free sal~ :
12 was obtained at a yield of 91~%o The salt was dissolved in 13 dic~ol~ne and was found to ha~e a limited solubilityO A
4 satura~ed dioxolane solution contalned about l~ mwles of salt per liter o~ ~olv~ntO ~ecause a l.ow resistivity is 16 important in an~ s~cessful electrolyte ~yetem~ spec~fic 17 resisti~itie~ were mea~ured as a f~nction of saLt concentr~
18 tlon in ~he solvent and the results are pre~ented in Table I :~
19 belowO
EXAMPLE ~
21 TMEDoLiB(C2H5)3C~H5 (tetramet~ylethylenediamine .
. 22 lithium trie~hylphenyl~oride~ represents ~he prior ark 23 electro~yte of the type de~cr~b~d in U~S0 Patent NoO 3~76493850 24 To a soiution of triethylboron (19~66 g~ Oe2 mol) ~n 2.50 ml of benzene was added dropwl~e 100 ml o a 2 M benzene solu~
. . .
26 tion of TPIEDo LiC6Hs ~ After stirring overnight9 the solution .
~ 27 wa~ wa~med ~o 50C ~or 45 ~inutes. Solven~ rem~val on a :~ 28 vacuum rotary e~apora~or g~e TMED~LiB(C2Hs~3C6H~ as a w~ite solid. :
0 Ani~lysiso :31 Ca:Lculated for C~gH36N7BLi ~ C 72~49~ H.12.17 32 and ~ 9039%
:~ - 8 - :
9 ~ ~
~ Fourld ~ C 7~715, H ll~99 2 and N 8~9~%
3 Speci~lc: resistivi~ies were obt:ained in dLo~olane a5 a func~
4 tion o:E l~DcLiB(C~H6)3C6Hs corlcen~ration expr~ssed as moles s c~mplex per liter solvent. ~he results are g-lven in Table L
6 belowO
7 EXAMPL~ 3 8 Li~hium tetramethylboride representing an electro~
9 lyte salt o~ ~he present invention was prepared a8 follows:
Boron triflu~ride die~hyle~hera~e (70~9 g~ 0.5 1 mole) was added slowlg to a stirred solution of CH3Mg~r (525 2 ml of ~68 M ether solution~ under a dry argon atmosphere.
The volatlle ~(CH3)3 w~ich ormed was passed by means o a 14 gla~ trans~er line ~o a second ~lask where ~t was allowed t~ reac~ wi~h an ether solution o halide free CH3~i (315 ml 16 of 195~ M ~olu~ion) which was cooled by a bath o Dry Ice 17 acetoned The reaction miæture was allowed to ~tand overn~g~t 18 and warm slawly to room temperature~ The bulk of the ether ~ :
19 was removed by di~illa~ion~ Final ~acuum drying (^~O,l Torr~
60C) afforded 33~4 g (85%) o~ LiB(CH3~4 as whlte crystal~.
21 Pure LiB(OEI3~ melts at 18~4C and f~rm~ clear 22 solut~ons in dioxoiane, Speclfic resis~ivity m~asurements 23 made on such solution~ are given in Table I bel~w.
24 EXAMPLE 4 ~:
Boron trifluorîde dlethyl~*~rate (2804g, 0~2 mol) was 26 added slowly~o a s~irred e~her solution containing abou~ 0~6 27 mol of CH3Mg~r. The B(C~13)3 which formed was swep~ from ~he 28 reacti~n fla~:k in a stream o~ dry ni~rogen and was condensPd 29 in ether contained in a second flask w~ich was cooled by Dry-IceO O~e~hslf hour after all the B~3~(C2Hs)2o had been 31 added, but~l:Li~hium (125 ml~ 1~6 M solu~lon in he~ane~ was 32; added~ to th~B(CH3)3-ether ~oluklon. Sol~ent ~as removed 9 :.' 93~
1 ~n vacuo t~ lea~e 31~5 ~ æ liquid product havirlg th~ formula 2 LiB(CH3~3C~Igc 3 ll~is material W2S ~issolved in dioxc~lane then t~e 4 solut~on was evaporated9 fir~t on a vacu~n rGt~ry evaporator~
then by means o~ a vacuum p~p ~mtil a constarlt weight of 6 36.1 g was obtainedO The produc~ 2 ~hlCk9 op3que~ liquid 7 Wa5 formulated a3 LiB(CH3~3C~Hg~dio,.col~neq SpecLi.c resis-8 ~ivity measuremen~s obtained on dio~cvlane solu~ions o this 9 material are given iD. T~ble ~.
E~A~PL~ 5 __~
11 LlB(C2H.s)3C~Hg~ A solutiorl of butyll:Lthium (82 12 ml9 2045 M in he~anP) wa~ added dropwise under ni~rogen to a l3 soluti.on of ~riethyl~oron (1906 g3 002 mol~ in S00 ml of hep~
4 tane. A~er the addi~ion was complete~ the slurry formed was 15 dlluted with ~00 ml o heptane and the mixture was heated ~t 6 45C :Eor 2 hoursi Filtration and vacuum drying the solid 17 aorded 3~4 g (quan~ita~e) of LiB(~EIs)3C~Hg~ Speciflc 18 resist~7ities o~ ~his salt: in dioxolane were measured as a 19 funct:lon of concentr~ion and the results are given in Table I<, 20 EXAMPL; 3 6 _ 21 LiB~C4Hg)~. Bu~yllithium (125 m~ 1.. 6 M s~lut:ion 22 in h~xane) wa~ added ~:o a solu~ion o ~ribu~yl~oron ~36,4 g~
23 0.2 mol) in 500 ml o hep~ane under a nitrog2n atmosphere 24 pxoduc:ing an lmmedia~e pr~30ipita~e0 ~he solid was ~solated 25 by ilt:ratio~l and was dried in a VaCU~mfl The yield ~a~ 36Q7 26 g (75%) of a:ir sensi~e solid. Specific resist~vitle~ o 27 dioxe~lane solutions were mea$ured ~rld are given in Table I~
.
.
29 Ll:B~C6H~3C~Hgo To a suspension of triphenylbo~on (408 g9 19~8~mm~1) in 75 ml v~ hept~ne w~s added 20 mmol of 31 butyllithium in hexane (12 ml~ Af~er s~irrlng overnlgh~
32 the product was ~iltered and drled in a vacuumO The solid~
- ~0 - :
~7 ~ 3S~
1 ~Jhlch ~eighed 2.09 g, was dissolved i.n dioxolane ~nd spec~ic 2 resis~.iviti~s o~ the solut~oll were measured~ The dat~ ls 3 gi.ver~ in Table Io A solution conta.ining gre~ter than l.S
4 moLes of salt p~r milliliter of dioxol~ne could no~ be ob~
5 tR~ned owi.ng to limi~ed solubili~y o ~he saltv - .
: :
. .
. . .
33S~
~ ,, ,, ~ oo ~
O I ~) ~ ~ ~D C~ I
C~ I ~ H ~I C~l U'~ I
~ ~ t C~
o I I I r-ll ~1 ~ I
ttl N
_~
_ 0~ ~ O
~d ~ I ~ C?l ~ ~ ~ I .
~ S`l ~ I C~
0~ ~rl H
. ~ .
' I . O C~
~3 V ~
U~ rl ' . ~ ~ ~
H ~ . C~ ~ ~ O ~ ~ ~.:
~1 ~ r-l , ' ~ .~ ~ ' ' ' ~IJ `~ ,, ~ ~ _ ~ ' ' ' . O ~ I~
Ln o c`~ o ~ 3 ~-I ~ U 5 :d ~c ~--~; ~ ~ ~ ~ ~ ~, ~rl ~ rl ::: ~rl ~ rl ~rl ~ EX~.L~ ~
2 E.i.B(CiL3~ LiBr~ Boron ~r~ luoride c1~ethy~.etherate 3 (005 m~.e~ was added sl~wly to a di~.*E~ h~rsolu~ion con~ai~
4 ing 2 Mnl.es of C~I3Li~LiBr ~mder an atmosphere o~ dry nitrogen.
A Dr~r Ice~acetona ba~h provided cooling during this additio~
6 and ;~fter actdition was com~leteD the reaetion mixture W2S
7 all~wed ~o wanm ~o room temperatureO The so~1ltlon wa~ de-8 can~ed rorn excess lithium salts and was concentrated tu ~bou~
9 40~ ml by d~s~illa~ 4 Fil~r~at~o~ removed add~ional salt an~ a~forded a cle~r ~olutl.on which was concentrated to give 11 a w~ e solidO This ~olid~ after drying ~t 60C in a vacuum~
12 weighed ~ 2 0 7g o 3 ~n~ly~ calculated for LiB~CH3)~o~ LiBr: Br, 32093%o 14 Found: Br9 32018%o Su~ficient LiB~CH3~ LiBr was disso~ved in dioxolane 6 to produce a solution whlch wa~ 205 molar in li~hium lon con~
7 centra~ion. Thi~ ~olu~ion had a speciic res~stivity of lO9 18 ohm cm.
LiAl(CH~3C~Hg~ Addition of butyllithi~n (62,5 ml o 21 a 2O4 M hexane ~lu~ion) to ~ s~ir~ed solution of tr~nethyl~
22 alum~num (1008g~ OolS mole~ ~n 85Q ml of heptane g~re an 23 immf3diate precipitater After an additiofnal ~Of hours st~rrLng~ff 24 ~he soflid was igofla~ed by filtration3 was washed three times ;-with resh heptane and wa~ vacuum dried ~o give about 17g c~
26 solid.
27 Spfeci~ic resis~it~es of this salt were obtalned as 28 a ~unctlon o:E concentration ~n dioxolanP solutionO They ::
29 were ~ound to be 129D 10~, 110 and l39 ohm cm~ ~e~is.t~v~y :
a~ ~oncentrations of l~0 m'~ loS m~, 200 ml and 205 m~
, . : :
~ 31 respectively.
f ~ 13 :: . . . . . .
,, , ,~ ~ , . .. .. . . . .. .
~7~ 3 1 EXMMPI,E; lO~'.L'hr~t~20 2 These ex~mples are cllrected t:o the kesting o vario~s 3 TME~-complexed prior art electrolyte-containing cells and 4 present .Lnven~in electroly~e~containing cells.
s The test cells contained a lithium anode of liLhi~n 6 ribbon ~res~ed on expanded nickel or tan~alum screen. The 7 cathod~ was a porous cake o a mix~.~re o~ TiS2 and Te~
~90~95~ TiS2 and 5~10% Te10n) pressed onto an expanded nickel. or ~antalum screen or pressed onko a pi~ce o~ carbon feltO The anode ~nd cathode were separated by placing the ll anode ~nd ca~hode in microporous polyprop~lene ~ags sold under 12 ~he n~me Celgard by Celanese Corporation of Amexi.ca~ New Yo~kO
13 A glass m~t was also placed between the anode and t~e cathodec 14 The cells wexe also provided with a reference llthium elec~
trode ~ hium ribbon pressed on a tan~alum or nickel 16 screen~ Thc reerence was also in a microporous polypropy-17 lene bag and separated ~rom ~e cathode by a g~ass matc The ; :~
8 refexence elec~rode w~s located on ~he s;de of ~he cathode opposit~ t~he anodeO
The results o~ the tests are se~ orth in Table II
21 below~ ~s c~n be seen~ most of the electroly~e~ o ~he 2~ present inven~lon are at least as good as, and ~n m~ny cases 23 better th~ng the TMED~complexed ele~trolytes. Thusg it was 24 surprisingly discovered that:the prior art complexing require~
25 ments wereD i.n fact~ not necessary to obtain advantageous 26 electrol~te sys~ems.
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2 ~l eleotrol.yte composit:ion o:l the present lnvent~or 3 containirlg LiB(C?.H5~3C~llg~ a composi~ion contain~ng this salt 4 compl~xed w~th '~MED as in the prior a-rt and dissolved ln the s prior art ben7.ene solvent~ ancl ~ composltion containing thLs 6 salt. complexed with TM~D but rlissolved in a preferred sol~ent 7 of the present lnvent~on were pr~pared and tested ~or com-8 p~rison ~$ ~ollows:
9 A two molar solution of ~l~ED^LiB(C2Hs~3C4Hg in o benzene w~s prepared. A por~lon of this solution was used-to m~e serial dilutions to 1~5 m~lar and 1.0 molar solute 2 concentr~ions~ S~eci~lc resistivlties ~or the 2~0, 1.5 and 13 1.0 M soL~ti.on~ were 1~509 1075 and 117S ohm centimeters, 14 respectlvely. In a subseqwent experlment, 09576 g (2'mmole) o~ the same complex was dlssolved in 0.308g (0O35 ml) o 6 benzene to give a 2~0 molar solution. By comb~ning ~he 0~35 7 ml benzene with the 0O30 ml o~ ~MED contalned in TMED-LiB-18 ~C~Hs)3C4Hgg the ~otal solvent present becomes 0~65 ml~ and 19 the solution mol~lity o 3~08 mlO E~pressing th~ loS and 1~0 molar solu~ions ln ~ersns of volume molali~ies one ob~
2l tains 2094 and 1048 m~ respec~l~ely~
22 So~ut~ons o~ TP~oLiB(C2Hs)3C4Hg ln dio~olane were prepared and the volume molali~ies were corrected or the 24 TM~D diluent O For each solutionD the speci~ic resistivity was measured: 2~07 m9 (175 v~m cm~ 82 m~ (1.46 ohm cm)~
26 1.54 m9 (133 ohm cm), 1~23 m~ (125 ohm cm~ and 0087 m~ (136 27 ohm cm). . `
28 The composition LiB(C~s~3C~Hg was dissolved in , 29 dioxolan~ to give a 300 mt solutionO The ~pecific resis~ :~
t~vlt-les of th~s ~olu~ion and solutlons prepared by subse-3l quen~ dilu~ion with :d~oxolane were me~suredo 300 m' (268 2 ohm Cm)9 2~5 m9 ~184 ohm cm)~ 2.. 0 m~ (136 ohm cm), 1.5 m : ~ ~7 ~
-.
~114 ohm cmj~, 1.0 m' ~113 ohlrl cm) and OriS m~ (168 ohm cm).
2Pl.o~:s o:E Speci:Eic Rec;:lstivLty ~B, volume molality 3 were made for T~D-LiB(C.~Hs)3C~rl7.9 in benzene, T~D~LiB-4 (C2Hs ~ 3C~g in dioxclarle and Li B ~C2Hs ) 3C~Hg in dioxolasile ~
5 Smooth c~2rves could be dr~wn through these data. The da~a allowed c~mparison of Spec; ic ~esistivi~ies withln the con~
7cen~ratl.nn ran&e of 1~25~200 m9~ 19he da a, :in~erpolated 8 :~rom these plo~sj are s~ri.zed i.n Table III ~elow~
93~e~I I
10RESISTIVITI:ES OF LiB~C2Hs)3C~g A5 11 E'[J~CTION OF CO~ PII~XING.. AGENT ~13 SOL~VENT
12 SPeci:Eic Resistivities::(ohm cm~
13 Volume r--~D--L:
14Molalities Sa:Lt Salt Li SaLt 15 ml Benzene Dioxolane Dio~olane ., .~ , ~ ~ ... . .
~6 1 . 25 1160 125 1~0 17 :l . 50 llOS 130 114 18 1 . 75 1080 14~ 120 19 2.0 ~075 170 136 " ', The ~able illustrates tha~ TMED~LiB(C2Hs)3C4Hg in 21 benzene clearly is more resis~i~e than the same co~plex dis-22 solved in dioxolane. Furthermore, compar~ng TMED'LiB- :
23 (C2Hs)3C~Hg in dioxolane vs~ LiB~C2Hs)3C~Ig in dioxolane~
24 the presence o TMED o~fers no adv~n~age and ac~ually in-. . . .
2s creases the ri~sistivi~y o:E the lithium s<~
-; ~ ~ ~ "" '' ' ''' : :~ :
.
.
11 metallic a~kali metal sal~ and wh~ch will~ wit~ the saLt~
12 produce an effective electrolyteO Thus, the solvents which 13 are included ~e ~hose composed o~ one or more compou~ds 14 selec~ed from straigh~ chain e~hers, polyethers~ and cyclical e~hers, including such ethers as ~he ace~als~ ketals and 16 ortho~es~ers, and organlc es~ers, sulfones~ organic nitrates 7 ~nd nitri~es and organic sulfates and sulites O Examples 18 include propylene carbona~eg tetrahydrourarl9 dio~olane9 19 furan, sulolaneg dime~hyl sul~ite~ n~trobenzene~ nitro-:, ~ methane and ~he like~ The preferred solven~s are the ethers.
21 For exampl~ dioxolan~9 dime~hyoxyeth~ne~ and ~xtures of 22 these are useul~ Pre~erred ~s a solvent contain~ng dioxo~
23 laneO
24 In general~ sufficien~ organic solvent mNs~ be 25 utilized ~o e~fec~?ely render the organome~allic a1kali 26 me~al sal~ eLec~ro~y~cally active (l~e~J adequately con~
27 ductive) when employ~d in an elec~rolytle cell. ~he solvent -23 may be a mixt1ure of compounds as suggested above, and may contain hnown eleetroly~e additives whioh are compa~ble with the solvent and the particular salt employed~ As ~o 31 the amount of salt to be employed ln the organio solvent, - 32 this will vary ~remendously with ~he speelfic solven~ used, :~ :
.. .. - . .
-~ .
3S~
1 the sal~ chosen ancl t.he. type of electr~ehemLcal cell per-2 ~ormance wh-lch is desired~ In any even~ an elec~olytically 3 active amount o~ sal~ must be added ~o the sol~ent. Typl;~
4 cally9 a~ least about Ool m~leC; O~ sal~ up to sa~uration may be used per liter of solven~ e.g.~ about Ool to abou~ 5 6 moles/liter may be used and preferably about O.S to about 3 7 moles/li~er may be used~
8 The pxesen~ invention9 as mentloned~ also ~ela~es 9 to ~mproved9 reehar.geable~ high energ~ densit~ ele~trochemlcrll c~lls~ ~he cell~ i.ncl~de an~ containing alkali metal anodes 11 and elec~rol~kes as defined above. Partlcularly useful are 2 those containing solld cathode-act~ve materials, eOgOD
cathodes having ~r~n~ition metal chalcogenidesO Also pre~
ferred are the seconda~y cellsO Alkal~ metals used in the anodes are desirably li~hiumg sodium and potassiumg and the 16 transition metal chalcogenide ca~hode~active mater-lals include ~hose con~in~ng at least ~ne member selected from 8 the group consi~ting of molybden~m~ titanium, ~irconium~
19 hafnium~ ni~ium9 ~antal~m and vanad~um, and at least one 20 chalcogen selected from ox~gen9 sulfur9 selenium~ and tellu~ :
21 i~o The anode i~ ad~antageousl~ ~de o:E lithium or lithium 22 alloys be~ause lith~um has the l~west equi~7alent weight of 23 the alkali metal~ and is the most elac~-fonega~ive9 thereby 24 pro~iding the most energy per welght unit~ Of ~e lamellar transition metal chalcogenid~sg preferred are the dichalco~
26 genides~ and the most pre~erred is titanium disulfide because :~
.. .. .
~:: 27 i~ has a low equlv~lent weig~t9 is electrically conductive ~: ~ 28 and its constituents are readily avaLlableO ~he electrolyte 29 composition consis~s esse~tially of so~ren~ and alkali rnetal calt(s) which is set ~or~h above.
: 31 Th.e oll~wLng exa~ples are presented as mere~y 32 being illus~rative o~ the presen~ inventlonD and the 7 ~
1 lnvcnt-i~n should no~ be cons~rued to be l:imited thereko~
2 Exampl~.s 1~ and 2 are direc~ed to priox art electrolytes ~nd 3 Examples 3 to 9 e~emplify the present lnvention (Eæample 8 4 illust.1r~tes ~n el.e~troly~e o the present invention which con~ains a m;x~ure of salks~ Examples 10 to 21 are directed 6 to c~parisons of prior art type ~lec~roly~e systems and 7 thos~ of the presen~ inven~i~n~
___ 9 LiB(C6~s)~ (lith-ium tetr~phenylboride) was prepared in accordan~e with the tea~hin~s of Szwarc et al9 cited ~bOve7 11 by rea~ting NaB(C6Hs~4 wi~h LiClo A dr~9 solvent free sal~ :
12 was obtained at a yield of 91~%o The salt was dissolved in 13 dic~ol~ne and was found to ha~e a limited solubilityO A
4 satura~ed dioxolane solution contalned about l~ mwles of salt per liter o~ ~olv~ntO ~ecause a l.ow resistivity is 16 important in an~ s~cessful electrolyte ~yetem~ spec~fic 17 resisti~itie~ were mea~ured as a f~nction of saLt concentr~
18 tlon in ~he solvent and the results are pre~ented in Table I :~
19 belowO
EXAMPLE ~
21 TMEDoLiB(C2H5)3C~H5 (tetramet~ylethylenediamine .
. 22 lithium trie~hylphenyl~oride~ represents ~he prior ark 23 electro~yte of the type de~cr~b~d in U~S0 Patent NoO 3~76493850 24 To a soiution of triethylboron (19~66 g~ Oe2 mol) ~n 2.50 ml of benzene was added dropwl~e 100 ml o a 2 M benzene solu~
. . .
26 tion of TPIEDo LiC6Hs ~ After stirring overnight9 the solution .
~ 27 wa~ wa~med ~o 50C ~or 45 ~inutes. Solven~ rem~val on a :~ 28 vacuum rotary e~apora~or g~e TMED~LiB(C2Hs~3C6H~ as a w~ite solid. :
0 Ani~lysiso :31 Ca:Lculated for C~gH36N7BLi ~ C 72~49~ H.12.17 32 and ~ 9039%
:~ - 8 - :
9 ~ ~
~ Fourld ~ C 7~715, H ll~99 2 and N 8~9~%
3 Speci~lc: resistivi~ies were obt:ained in dLo~olane a5 a func~
4 tion o:E l~DcLiB(C~H6)3C6Hs corlcen~ration expr~ssed as moles s c~mplex per liter solvent. ~he results are g-lven in Table L
6 belowO
7 EXAMPL~ 3 8 Li~hium tetramethylboride representing an electro~
9 lyte salt o~ ~he present invention was prepared a8 follows:
Boron triflu~ride die~hyle~hera~e (70~9 g~ 0.5 1 mole) was added slowlg to a stirred solution of CH3Mg~r (525 2 ml of ~68 M ether solution~ under a dry argon atmosphere.
The volatlle ~(CH3)3 w~ich ormed was passed by means o a 14 gla~ trans~er line ~o a second ~lask where ~t was allowed t~ reac~ wi~h an ether solution o halide free CH3~i (315 ml 16 of 195~ M ~olu~ion) which was cooled by a bath o Dry Ice 17 acetoned The reaction miæture was allowed to ~tand overn~g~t 18 and warm slawly to room temperature~ The bulk of the ether ~ :
19 was removed by di~illa~ion~ Final ~acuum drying (^~O,l Torr~
60C) afforded 33~4 g (85%) o~ LiB(CH3~4 as whlte crystal~.
21 Pure LiB(OEI3~ melts at 18~4C and f~rm~ clear 22 solut~ons in dioxoiane, Speclfic resis~ivity m~asurements 23 made on such solution~ are given in Table I bel~w.
24 EXAMPLE 4 ~:
Boron trifluorîde dlethyl~*~rate (2804g, 0~2 mol) was 26 added slowly~o a s~irred e~her solution containing abou~ 0~6 27 mol of CH3Mg~r. The B(C~13)3 which formed was swep~ from ~he 28 reacti~n fla~:k in a stream o~ dry ni~rogen and was condensPd 29 in ether contained in a second flask w~ich was cooled by Dry-IceO O~e~hslf hour after all the B~3~(C2Hs)2o had been 31 added, but~l:Li~hium (125 ml~ 1~6 M solu~lon in he~ane~ was 32; added~ to th~B(CH3)3-ether ~oluklon. Sol~ent ~as removed 9 :.' 93~
1 ~n vacuo t~ lea~e 31~5 ~ æ liquid product havirlg th~ formula 2 LiB(CH3~3C~Igc 3 ll~is material W2S ~issolved in dioxc~lane then t~e 4 solut~on was evaporated9 fir~t on a vacu~n rGt~ry evaporator~
then by means o~ a vacuum p~p ~mtil a constarlt weight of 6 36.1 g was obtainedO The produc~ 2 ~hlCk9 op3que~ liquid 7 Wa5 formulated a3 LiB(CH3~3C~Hg~dio,.col~neq SpecLi.c resis-8 ~ivity measuremen~s obtained on dio~cvlane solu~ions o this 9 material are given iD. T~ble ~.
E~A~PL~ 5 __~
11 LlB(C2H.s)3C~Hg~ A solutiorl of butyll:Lthium (82 12 ml9 2045 M in he~anP) wa~ added dropwise under ni~rogen to a l3 soluti.on of ~riethyl~oron (1906 g3 002 mol~ in S00 ml of hep~
4 tane. A~er the addi~ion was complete~ the slurry formed was 15 dlluted with ~00 ml o heptane and the mixture was heated ~t 6 45C :Eor 2 hoursi Filtration and vacuum drying the solid 17 aorded 3~4 g (quan~ita~e) of LiB(~EIs)3C~Hg~ Speciflc 18 resist~7ities o~ ~his salt: in dioxolane were measured as a 19 funct:lon of concentr~ion and the results are given in Table I<, 20 EXAMPL; 3 6 _ 21 LiB~C4Hg)~. Bu~yllithium (125 m~ 1.. 6 M s~lut:ion 22 in h~xane) wa~ added ~:o a solu~ion o ~ribu~yl~oron ~36,4 g~
23 0.2 mol) in 500 ml o hep~ane under a nitrog2n atmosphere 24 pxoduc:ing an lmmedia~e pr~30ipita~e0 ~he solid was ~solated 25 by ilt:ratio~l and was dried in a VaCU~mfl The yield ~a~ 36Q7 26 g (75%) of a:ir sensi~e solid. Specific resist~vitle~ o 27 dioxe~lane solutions were mea$ured ~rld are given in Table I~
.
.
29 Ll:B~C6H~3C~Hgo To a suspension of triphenylbo~on (408 g9 19~8~mm~1) in 75 ml v~ hept~ne w~s added 20 mmol of 31 butyllithium in hexane (12 ml~ Af~er s~irrlng overnlgh~
32 the product was ~iltered and drled in a vacuumO The solid~
- ~0 - :
~7 ~ 3S~
1 ~Jhlch ~eighed 2.09 g, was dissolved i.n dioxolane ~nd spec~ic 2 resis~.iviti~s o~ the solut~oll were measured~ The dat~ ls 3 gi.ver~ in Table Io A solution conta.ining gre~ter than l.S
4 moLes of salt p~r milliliter of dioxol~ne could no~ be ob~
5 tR~ned owi.ng to limi~ed solubili~y o ~he saltv - .
: :
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2 E.i.B(CiL3~ LiBr~ Boron ~r~ luoride c1~ethy~.etherate 3 (005 m~.e~ was added sl~wly to a di~.*E~ h~rsolu~ion con~ai~
4 ing 2 Mnl.es of C~I3Li~LiBr ~mder an atmosphere o~ dry nitrogen.
A Dr~r Ice~acetona ba~h provided cooling during this additio~
6 and ;~fter actdition was com~leteD the reaetion mixture W2S
7 all~wed ~o wanm ~o room temperatureO The so~1ltlon wa~ de-8 can~ed rorn excess lithium salts and was concentrated tu ~bou~
9 40~ ml by d~s~illa~ 4 Fil~r~at~o~ removed add~ional salt an~ a~forded a cle~r ~olutl.on which was concentrated to give 11 a w~ e solidO This ~olid~ after drying ~t 60C in a vacuum~
12 weighed ~ 2 0 7g o 3 ~n~ly~ calculated for LiB~CH3)~o~ LiBr: Br, 32093%o 14 Found: Br9 32018%o Su~ficient LiB~CH3~ LiBr was disso~ved in dioxolane 6 to produce a solution whlch wa~ 205 molar in li~hium lon con~
7 centra~ion. Thi~ ~olu~ion had a speciic res~stivity of lO9 18 ohm cm.
LiAl(CH~3C~Hg~ Addition of butyllithi~n (62,5 ml o 21 a 2O4 M hexane ~lu~ion) to ~ s~ir~ed solution of tr~nethyl~
22 alum~num (1008g~ OolS mole~ ~n 85Q ml of heptane g~re an 23 immf3diate precipitater After an additiofnal ~Of hours st~rrLng~ff 24 ~he soflid was igofla~ed by filtration3 was washed three times ;-with resh heptane and wa~ vacuum dried ~o give about 17g c~
26 solid.
27 Spfeci~ic resis~it~es of this salt were obtalned as 28 a ~unctlon o:E concentration ~n dioxolanP solutionO They ::
29 were ~ound to be 129D 10~, 110 and l39 ohm cm~ ~e~is.t~v~y :
a~ ~oncentrations of l~0 m'~ loS m~, 200 ml and 205 m~
, . : :
~ 31 respectively.
f ~ 13 :: . . . . . .
,, , ,~ ~ , . .. .. . . . .. .
~7~ 3 1 EXMMPI,E; lO~'.L'hr~t~20 2 These ex~mples are cllrected t:o the kesting o vario~s 3 TME~-complexed prior art electrolyte-containing cells and 4 present .Lnven~in electroly~e~containing cells.
s The test cells contained a lithium anode of liLhi~n 6 ribbon ~res~ed on expanded nickel or tan~alum screen. The 7 cathod~ was a porous cake o a mix~.~re o~ TiS2 and Te~
~90~95~ TiS2 and 5~10% Te10n) pressed onto an expanded nickel. or ~antalum screen or pressed onko a pi~ce o~ carbon feltO The anode ~nd cathode were separated by placing the ll anode ~nd ca~hode in microporous polyprop~lene ~ags sold under 12 ~he n~me Celgard by Celanese Corporation of Amexi.ca~ New Yo~kO
13 A glass m~t was also placed between the anode and t~e cathodec 14 The cells wexe also provided with a reference llthium elec~
trode ~ hium ribbon pressed on a tan~alum or nickel 16 screen~ Thc reerence was also in a microporous polypropy-17 lene bag and separated ~rom ~e cathode by a g~ass matc The ; :~
8 refexence elec~rode w~s located on ~he s;de of ~he cathode opposit~ t~he anodeO
The results o~ the tests are se~ orth in Table II
21 below~ ~s c~n be seen~ most of the electroly~e~ o ~he 2~ present inven~lon are at least as good as, and ~n m~ny cases 23 better th~ng the TMED~complexed ele~trolytes. Thusg it was 24 surprisingly discovered that:the prior art complexing require~
25 ments wereD i.n fact~ not necessary to obtain advantageous 26 electrol~te sys~ems.
.
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~ ~ ~ ~ L~ra ~1 ~ ra oo .1~ ~ ~ rl bO
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Q~ ra ~ rl a~
. 01~ ~ 3 Ir~ ~ ro 3 t'd 1 N ~ r~ o C~l O r/ ~
) ~ r~ r-l rl ~~IJ
C/:l Cl ~J C~l 11 ~ t~ ta r-l O t~l ~1 U:l t~l ~ D ~) r-l tl) U S~ C) t~ ~J ~0 C) rl ~ ~d r~i :1rl ~ ~
~-I ~1 C~ ,{~ a)~ ~1 a) ,a Q) 1_ 1 rl ~I bOa) ~SI
~ ~ 0~00 ~ O `~ r o ~3 O ~ r-l ~bO ~ ~
~ ~ ~ 5~ ) ~r-l ~ 1F'~ ~ g o ~ r rl 3 ~;Z; ~ b~ ~ ,a ~1 0 ,~ r rc~ T--l rJ~ ~ 1~ 0 ~J ~ a) ~ ~ ~ 1 -- E~ ~ i- c 1~ o ~ t) a~ bO r~ cq o s I
LI Zj ~ ~q ~, C5~ O U ~1 o O ~ O ~ C~l ~ r~
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~; ~ 1r-l E ~ .) U a 1~1 ~ ~ - ~-1 bl) t~
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~3~ . 00 rl ~1~ ~3 0e~ a) ~ ,~ Sl ~I Q) t~
~: ' . 9 ~ 1~l W a) ~ rl - u~ ~ 1 o ~ 0 E~
a ~ ~O ~ ,~ra ~ r--I ~ rl rn ~ 0 Il)~rl ~I S I ~rl : ~ td 1~) ~ C) ~ ~J ~ ~d bl ~ rl c~ al w a~ O td (D
r n ~ ~ a) ~ ~ ~ a~ -t~l O I~ rl 8Ul tl) h W O
13 E~ rl ~ O
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, EO u O ~ c~ O
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16 ~
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2 ~l eleotrol.yte composit:ion o:l the present lnvent~or 3 containirlg LiB(C?.H5~3C~llg~ a composi~ion contain~ng this salt 4 compl~xed w~th '~MED as in the prior a-rt and dissolved ln the s prior art ben7.ene solvent~ ancl ~ composltion containing thLs 6 salt. complexed with TM~D but rlissolved in a preferred sol~ent 7 of the present lnvent~on were pr~pared and tested ~or com-8 p~rison ~$ ~ollows:
9 A two molar solution of ~l~ED^LiB(C2Hs~3C4Hg in o benzene w~s prepared. A por~lon of this solution was used-to m~e serial dilutions to 1~5 m~lar and 1.0 molar solute 2 concentr~ions~ S~eci~lc resistivlties ~or the 2~0, 1.5 and 13 1.0 M soL~ti.on~ were 1~509 1075 and 117S ohm centimeters, 14 respectlvely. In a subseqwent experlment, 09576 g (2'mmole) o~ the same complex was dlssolved in 0.308g (0O35 ml) o 6 benzene to give a 2~0 molar solution. By comb~ning ~he 0~35 7 ml benzene with the 0O30 ml o~ ~MED contalned in TMED-LiB-18 ~C~Hs)3C4Hgg the ~otal solvent present becomes 0~65 ml~ and 19 the solution mol~lity o 3~08 mlO E~pressing th~ loS and 1~0 molar solu~ions ln ~ersns of volume molali~ies one ob~
2l tains 2094 and 1048 m~ respec~l~ely~
22 So~ut~ons o~ TP~oLiB(C2Hs)3C4Hg ln dio~olane were prepared and the volume molali~ies were corrected or the 24 TM~D diluent O For each solutionD the speci~ic resistivity was measured: 2~07 m9 (175 v~m cm~ 82 m~ (1.46 ohm cm)~
26 1.54 m9 (133 ohm cm), 1~23 m~ (125 ohm cm~ and 0087 m~ (136 27 ohm cm). . `
28 The composition LiB(C~s~3C~Hg was dissolved in , 29 dioxolan~ to give a 300 mt solutionO The ~pecific resis~ :~
t~vlt-les of th~s ~olu~ion and solutlons prepared by subse-3l quen~ dilu~ion with :d~oxolane were me~suredo 300 m' (268 2 ohm Cm)9 2~5 m9 ~184 ohm cm)~ 2.. 0 m~ (136 ohm cm), 1.5 m : ~ ~7 ~
-.
~114 ohm cmj~, 1.0 m' ~113 ohlrl cm) and OriS m~ (168 ohm cm).
2Pl.o~:s o:E Speci:Eic Rec;:lstivLty ~B, volume molality 3 were made for T~D-LiB(C.~Hs)3C~rl7.9 in benzene, T~D~LiB-4 (C2Hs ~ 3C~g in dioxclarle and Li B ~C2Hs ) 3C~Hg in dioxolasile ~
5 Smooth c~2rves could be dr~wn through these data. The da~a allowed c~mparison of Spec; ic ~esistivi~ies withln the con~
7cen~ratl.nn ran&e of 1~25~200 m9~ 19he da a, :in~erpolated 8 :~rom these plo~sj are s~ri.zed i.n Table III ~elow~
93~e~I I
10RESISTIVITI:ES OF LiB~C2Hs)3C~g A5 11 E'[J~CTION OF CO~ PII~XING.. AGENT ~13 SOL~VENT
12 SPeci:Eic Resistivities::(ohm cm~
13 Volume r--~D--L:
14Molalities Sa:Lt Salt Li SaLt 15 ml Benzene Dioxolane Dio~olane ., .~ , ~ ~ ... . .
~6 1 . 25 1160 125 1~0 17 :l . 50 llOS 130 114 18 1 . 75 1080 14~ 120 19 2.0 ~075 170 136 " ', The ~able illustrates tha~ TMED~LiB(C2Hs)3C4Hg in 21 benzene clearly is more resis~i~e than the same co~plex dis-22 solved in dioxolane. Furthermore, compar~ng TMED'LiB- :
23 (C2Hs)3C~Hg in dioxolane vs~ LiB~C2Hs)3C~Ig in dioxolane~
24 the presence o TMED o~fers no adv~n~age and ac~ually in-. . . .
2s creases the ri~sistivi~y o:E the lithium s<~
-; ~ ~ ~ "" '' ' ''' : :~ :
.
Claims (23)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An electrolyte composition consisting essen-tially of:
(a) an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrites; and (b) electrolytically active alkali metal salts including an electrolytically active amount of an organo-metallic alkali metal salt having the formula:
ZMRn wherein Z is lithium, wherein M is boron, wherein R represents n number of radicals which may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbon atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the metal M.
(a) an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrites; and (b) electrolytically active alkali metal salts including an electrolytically active amount of an organo-metallic alkali metal salt having the formula:
ZMRn wherein Z is lithium, wherein M is boron, wherein R represents n number of radicals which may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbon atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the metal M.
2. The electrolyte composition of claim 1 wherein the organic radicals R may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 6 carbon atoms and a phenyl radical.
3. The electrolyte composition of claim 2 wherein said organic solvent is one or more ethers.
4. The electrolyte composition of claim 2 wherein the organic radicals R may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 4 car-bon atoms.
5. The electrolyte composition of claim 4 wherein said organic solvent is one or more ethers and wherein all of the organic radicals R are methyl radicals.
6. The electrolyte composition of claim 5 wherein the solvent contains dioxolane.
7. The electrolyte composition of claim 1 wherein the concentration of organometallic lithium salt in said solvent is about 0.1 to about 5 moles/litre.
8. The electrolyte composition of claim 7 wherein the concentration of the organometallic lithium salt in said solvent is about 0.1 to about 3 moles/litre.
9. In an electrochemical cell which contains an alkali metal anode, a cathode and a non-aqueous electrolyte, the improvement comprising:
using as said electrolyte one which consists essentially of:
(a) an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrites; and (b) electrolytrically active alkali metal salts including an electrolytically active amount of an organometallic alkali metal salt having the formula:
ZMRn wherein Z is an alkali metal, wherein M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, Sn (stannous), In, Tl, P and As, wherein R represents n number of radicals which may be the same or different and are inertly substi-tuted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbon atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the Metal M.
using as said electrolyte one which consists essentially of:
(a) an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrites; and (b) electrolytrically active alkali metal salts including an electrolytically active amount of an organometallic alkali metal salt having the formula:
ZMRn wherein Z is an alkali metal, wherein M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, Sn (stannous), In, Tl, P and As, wherein R represents n number of radicals which may be the same or different and are inertly substi-tuted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbon atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the Metal M.
10. The cell of claim 9 wherein the cathode com-prises a solid cathode-active material.
11. The cell of claim 10 wherein in the electro-lyte, Z is an alkali metal selected from the group con-sisting of lithium, sodium, and potassium, M is a metal selected from the group consisting of B, Al, P and As, and wherein the organic radicals R may be the same or different and are inertly substituted or unsubstituted organic radi-cals selected from the group consisting of alkyl radicals having 1 to 6 carbon atoms and a phenyl radical.
12. The cell of claim 11 wherein the cell is a secondary cell and the organic solvent is an ether.
13. The cell of claim 12 wherein, in the electro-lyte, Z is lithium, wherein M is boron, and wherein the organic radicals R may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 4 carbon atoms.
14. The cell of claim 13 wherein said organic solvent is one or more ethers and wherein all of the organic radicals R are methyl radicals.
15. In an electrochemical cell which includes an anode having at least one alkali metal as its active material, a cathode having a lamellar transition metal chaleogenide as the cathode-active material and an electrolyte composition, the improvement wherein said electrolyte composition consists essentially of:
(a) an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrates; and (b) electrolytically active alkali metal salts including an electrolytically active amount of an organometallic alkali metal salt having the formula:
ZMRn wherein Z is an alkali metal, wherein M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, Sn (stannous), In, Tl, P and As, wherein R represents n number of radicals which may be the same of different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbons atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the metal M.
(a) an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrates; and (b) electrolytically active alkali metal salts including an electrolytically active amount of an organometallic alkali metal salt having the formula:
ZMRn wherein Z is an alkali metal, wherein M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, Sn (stannous), In, Tl, P and As, wherein R represents n number of radicals which may be the same of different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbons atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the metal M.
16. The electrochemical cell of claim 15, in the electrolyte, wherein Z is an alkali metal selected from the group consisting of lithium, sodium, and potassium, M is a metal selected from the group consisting of B, Al, P and As, and wherein the organic radicals R may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 6 carbon atoms and a phenyl radical.
17. The electrochemical cell of claim 16 wherein the anode-active material is lithium or alloys thereof, wherein the cathode-active material is titanium disulfide, and wherein, in the electrolyte, Z is lithium.
18. The electrochemical cell of claim 17 wherein said organic solvent is one or more ethers.
19. The electrochemical cell of claim 16 wherein, in the electrolyte, Z is lithium, wherein M is boron and wherein the organic radicals R may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 4 carbon atoms.
20. The electrochemical cell of claim 19 wherein said organic solvent is one or more ethers and wherein all of the organic radicals R are all methyl radicals.
21. The electrochemical cell of claim 20 wherein the solvent contains dioxolane.
22. The electrochemical cell of claim 16 wherein the concentration of the organometallic alkali metal salt in said solvent is about 0.1 to about 5 moles/liter.
23. The electrochemical cell of claim 22 wherein the concentration of the organometallic alkali salt in said solvent is about 0.5 to about 3 moles/liter.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/750,517 US4060674A (en) | 1976-12-14 | 1976-12-14 | Alkali metal anode-containing cells having electrolytes of organometallic-alkali metal salts and organic solvents |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1079351A true CA1079351A (en) | 1980-06-10 |
Family
ID=25018188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA287,605A Expired CA1079351A (en) | 1976-12-14 | 1977-09-27 | Electrolyte compositions for alkali metal reversible batteries |
Country Status (9)
Country | Link |
---|---|
US (1) | US4060674A (en) |
JP (1) | JPS5856232B2 (en) |
BE (1) | BE860068A (en) |
CA (1) | CA1079351A (en) |
CH (1) | CH630748A5 (en) |
DE (1) | DE2745051A1 (en) |
FR (1) | FR2374749A1 (en) |
GB (1) | GB1561933A (en) |
IT (1) | IT1088062B (en) |
Families Citing this family (48)
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DE2723772A1 (en) * | 1977-05-26 | 1978-12-07 | Varta Batterie | GALVANIC ELEMENT WITH A NEGATIVE LIGHT METAL ELECTRODE AND AN ANHYDROUS ORGANIC ELECTROLYTE |
IL52570A (en) * | 1977-07-21 | 1980-11-30 | Univ Tel Aviv | Non-aqueous primary cell |
US4117213A (en) * | 1977-08-24 | 1978-09-26 | Exxon Research & Engineering Co. | Alkali metal salts of complex anions containing heteroatom substituents and electrolyte compositions containing these |
US4104450A (en) * | 1977-08-24 | 1978-08-01 | Exxon Research & Engineering Co. | Alkali metal batteries having electrolytes including alkali metal salts of complex anions containing heteroatom substituents in organic solvent |
CA1105035A (en) * | 1977-08-24 | 1981-07-14 | Thomas A. Whitney | Alkali metal salts of complex anions containing heteroatom substituents and electrolyte compositions containing these |
US4104451A (en) * | 1977-09-26 | 1978-08-01 | Exxon Research & Engineering Co. | Alkali metal anode/chalcogenide cathode reversible batteries having alkali metal polyaryl metallic compound electrolytes |
US4139681A (en) * | 1978-03-02 | 1979-02-13 | Exxon Research & Engineering Co. | Electrochemical cells having alkali metal anodes and electrolyte salt complex compositions including haloorganometallic alkali metal salt complexes |
US4169808A (en) * | 1978-03-02 | 1979-10-02 | Exxon Research & Engineering Co. | Haloorganometallic lithium salt complex compositions and electrolyte compositions containing these |
US4201839A (en) * | 1978-11-01 | 1980-05-06 | Exxon Research And Engineering Co. | Cell containing an alkali metal anode, a solid cathode, and a closoborane and/or closocarborane electrolyte |
US4177329A (en) * | 1978-11-02 | 1979-12-04 | P. R. Mallory & Co. Inc. | Electrolyte salts for non aqueous electrochemical cells |
USRE31414E (en) * | 1978-11-02 | 1983-10-11 | Duracell Inc. | Electrolyte salts for non aqueous electrochemical cells |
US4252876A (en) * | 1979-07-02 | 1981-02-24 | Eic Corporation | Lithium battery |
US4293623A (en) * | 1980-07-03 | 1981-10-06 | Exxon Research & Engineering Co. | Electrolytes for alkali-metal electrochemical devices |
US4279976A (en) * | 1980-07-07 | 1981-07-21 | Exxon Research & Engineering Co. | Pseudohalide-containing salts for electrolytes of alkali-metal electrochemical devices |
FR2527610B1 (en) * | 1982-06-01 | 1987-08-14 | Anvar | TETRA-ALKYNYL BORATES OR -ALUMINATES OF ALKALINE METALS, THEIR SOLID SOLUTIONS WITH PLASTICS AND THEIR APPLICATION TO THE CONSTRUCTION OF CONDUCTIVE ELEMENTS FOR ELECTROCHEMICAL GENERATORS |
US4522901A (en) * | 1983-03-16 | 1985-06-11 | Allied Corporation | Secondary battery containing organoborate electrolyte |
US4499161A (en) * | 1983-04-25 | 1985-02-12 | Eic Laboratories, Inc. | Electrochemical cell using dimethoxymethane and/or trimethoxymethane as solvent for electrolyte |
US4489145A (en) * | 1983-10-18 | 1984-12-18 | Abraham Kuzhikalail M | Lithium battery |
FR2576712B1 (en) * | 1985-01-30 | 1988-07-08 | Accumulateurs Fixes | NON-AQUEOUS ELECTROCHEMICAL ELECTROCHEMICAL GENERATOR |
US4894302A (en) * | 1985-06-14 | 1990-01-16 | The Dow Chemical Company | Alkaline earth metal anode-containing cell having electrolyte of organometallic alkaline earth metal salt and organic solvent |
US4702974A (en) * | 1985-11-19 | 1987-10-27 | The Dow Chemical Company | Electrochemical generator utilizing solid polymer-salt complex |
US4705728A (en) * | 1986-08-11 | 1987-11-10 | The Dow Chemical Company | Solid polymer electrolyte and production method |
US4752544A (en) * | 1986-10-27 | 1988-06-21 | The Dow Chemical Company | Solid polymer electrolyte and production method |
US5021368A (en) * | 1988-09-29 | 1991-06-04 | The Dow Chemical Company | Novel ceramic-metal compounds |
WO1992002019A1 (en) * | 1990-07-20 | 1992-02-06 | University Of Hawaii | Electrochemically assisted excess heat production |
AU665575B2 (en) * | 1991-09-30 | 1996-01-11 | Wilson Greatbatch Ltd. | Autoclavable electrochemical cell |
US5419985A (en) * | 1993-03-30 | 1995-05-30 | Valence Technology Inc. | Additive for electrode |
US5491039A (en) * | 1994-02-04 | 1996-02-13 | Shackle; Dale R. | Solid electrolytes including organometallic ion salts and electrolytic cells produced therefrom |
US6180283B1 (en) * | 1998-01-20 | 2001-01-30 | Wilson Greatbatch Ltd. | Method for reducing voltage delay in an alkali metal electrochemical cell activated with a nonaqueous electrolyte having a sulfate additive |
US6444360B2 (en) | 1998-01-20 | 2002-09-03 | Wilson Greatbatch Ltd. | Electrochemical cell activated with a nonaqueous electrolyte having a sulfate additive |
US6027827A (en) * | 1998-06-30 | 2000-02-22 | Wilson Greatbatch Ltd. | Organic nitrite additives for nonaqueous electrolyte in alkali metal electrochemical cells |
US6060184A (en) * | 1998-07-09 | 2000-05-09 | Wilson Greatbatch Ltd. | Inorganic and organic nitrate additives for nonaqueous electrolyte in alkali metal electrochemical cells |
US6136477A (en) * | 1998-10-22 | 2000-10-24 | Wilson Greatbatch Ltd. | Nitrate additives for nonaqueous electrolyte rechargeable cells |
US6210839B1 (en) * | 1999-01-25 | 2001-04-03 | Wilson Greatbatch Ltd. | Nitrite additives for nonaqueous electrolyte rechargeable electrochemical cells |
US6436583B1 (en) * | 2000-08-04 | 2002-08-20 | Moltech Corporation | Storage life enhancement in lithium-sulfur batteries |
US6528207B2 (en) | 2001-01-18 | 2003-03-04 | Wilson Greatbatch Ltd. | Electrochemical cell having an electrode with a nitrite additive in the electrode active mixture |
US6562515B2 (en) | 2001-03-21 | 2003-05-13 | Wilson Greatbatch Ltd. | Electrochemical cell having an electrode with a nitrate additive in the electrode active mixture |
US20060024579A1 (en) | 2004-07-27 | 2006-02-02 | Vladimir Kolosnitsyn | Battery electrode structure and method for manufacture thereof |
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JP2008535154A (en) | 2005-03-22 | 2008-08-28 | オクシス・エナジー・リミテッド | Lithium sulfide battery and method of manufacturing the same |
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EP2629352A1 (en) | 2012-02-17 | 2013-08-21 | Oxis Energy Limited | Reinforced metal foil electrode |
EP2784852B1 (en) | 2013-03-25 | 2018-05-16 | Oxis Energy Limited | A method of charging a lithium-sulphur cell |
PL2784851T3 (en) | 2013-03-25 | 2015-12-31 | Oxis Energy Ltd | A method of charging a lithium-sulphur cell |
EP2784850A1 (en) | 2013-03-25 | 2014-10-01 | Oxis Energy Limited | A method of cycling a lithium-sulphur cell |
GB2517228B (en) | 2013-08-15 | 2016-03-02 | Oxis Energy Ltd | Laminate cell |
CN105830259B (en) | 2013-12-17 | 2019-04-09 | 奥克斯能源有限公司 | Electrolyte for lithium-sulfur cell |
KR102445459B1 (en) | 2014-05-30 | 2022-09-20 | 옥시스 에너지 리미티드 | Lithium-sulphur cell |
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US3764385A (en) * | 1970-12-22 | 1973-10-09 | Exxon Research Engineering Co | Electric battery using complexed inorganic lithium salts as charge transfer agent |
BE794086A (en) * | 1972-01-31 | 1973-07-16 | Accumulateurs Fixes | ELECTROCHEMICAL GENERATOR |
FR2204899B1 (en) * | 1972-10-30 | 1975-03-28 | Accumulateurs Fixes | |
CA1021844A (en) * | 1973-09-10 | 1977-11-29 | M. Stanley Whittingham | Rechargeable battery with chalcogenide cathode |
US4002492A (en) * | 1975-07-01 | 1977-01-11 | Exxon Research And Engineering Company | Rechargeable lithium-aluminum anode |
-
1976
- 1976-12-14 US US05/750,517 patent/US4060674A/en not_active Expired - Lifetime
-
1977
- 1977-09-27 GB GB40167/77A patent/GB1561933A/en not_active Expired
- 1977-09-27 CA CA287,605A patent/CA1079351A/en not_active Expired
- 1977-10-04 IT IT28273/77A patent/IT1088062B/en active
- 1977-10-06 DE DE19772745051 patent/DE2745051A1/en active Granted
- 1977-10-20 JP JP52126341A patent/JPS5856232B2/en not_active Expired
- 1977-10-24 FR FR7731921A patent/FR2374749A1/en active Granted
- 1977-10-25 BE BE182020A patent/BE860068A/en not_active IP Right Cessation
- 1977-10-31 CH CH1323077A patent/CH630748A5/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE2745051A1 (en) | 1978-06-15 |
FR2374749B1 (en) | 1983-09-23 |
CH630748A5 (en) | 1982-06-30 |
GB1561933A (en) | 1980-03-05 |
BE860068A (en) | 1978-04-25 |
IT1088062B (en) | 1985-06-04 |
DE2745051C2 (en) | 1988-06-16 |
FR2374749A1 (en) | 1978-07-13 |
US4060674A (en) | 1977-11-29 |
JPS5856232B2 (en) | 1983-12-14 |
JPS5375435A (en) | 1978-07-04 |
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